Demountable rim.



A.R.BEHNKR DBMOUNTABLB RIM.

APPLICATION FILED MAR.25, 1913.

`1093375 Patented Apr.14,1914.

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.ALBERT .'R. BEHNKEOF ST. PAUL, MINNESOTA, ASSIGNOR-OF ONE-HALF T0 WILLIAM C. J. TIMMERMAN, 0F ST. PAUL, MINNESOTA.

DEMOUNTABLE RIM.

teasers.'

vSpeeiicatien. of Letters Patent.

' Application med Maren as, 1913. serial No. 756,712.

To all whom it may concern Be it known `that iI, .ALBERT aul, in the county .of Raey,

tion.

My invention relates to improvements in fastening means-for demountable automobile rims, its object being essentially to provide simple and eiiicient means for fastening the ordinary demountable rim upon a wheel which will allow. the rim to be put upon or taken off without the necessity of the fastening means being removed from the wheel.

To this end the invention consists in the features of construction, combination, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings forming part of this specication, Figure 1 is a side elevation of part of the wheel embodying my features of invention; Fig. 2 is a sect-ion through the wheel felly, rim, and tire; Fig. 3 is a plan view of an abutment for the rim; Fig. 4. is a section through the abutment; and Fig. 5 is a side view of the rim broken away and with an abutment secured thereto.

Referring to the drawings, A represents the wheel elly and B the felly band suitably secured to the felly.

C represents an ordinary type of demountable rim supporting the usual tire 2. One side of the elly band B is upturned to' form a seat for the correspondingside of the rim, the opposite side of the telly band being cut off fiush with the felly.

In carrying out my invention I provide a plurality of securing bolts 4 extending through the felly, the threaded ends of the securing bolts projecting beyond the cut ofi' side of the felly band. I Mounted upon the threaded end of each bolt is a nut 5 formed with an inwardly tapered or cone faced elongation 6. Mounted upon the cone faced elonopeningS inits body portion for receiving the each wedge being-formed with an elliptical opening a in its bodyportion for receiving the inner end of the corresponding nut and with an inwardly extending foot 9 which extends at right angles to the bodyI portion, and has its outer face inclined to wedge in the space between the rim and felly band. The edge of the elliptical opening 7 nearest the foot 1.1.9: is` rounded in cross-section as shown in Fig. 2 to form a central fulcrum 10 for the wedge upon the inwardly projecting end 6 of the supported nut. f

To enable the clamping wedges to properly coperate with the rim I provide the abutments l1. Each abutment 11 is in the form of an elongated peak and is provided at each of its ends with a pair of studs 12 which project from opposite faces of .the

abutment. As shown in Fig. 4f one face of theabutment is flat to fit against the rim and the other face is inclined to conform tothe bevel of the upper edge of the corresponding wedge clamp. The abutments 1l are secured to the underface of the rim by means of the studs l2 extending from the flat face ofl each abutment, said studs being inserted in openings drilled through the rim and then being headed within the openings, as illustrated by dotted lines in Fig. 5. It is thus very easy to apply the abutments to the-ordinary demountable rim, it being only necessaryto drill a number of openings in the rim and secure the abutments in position in the manner set `forth. With the abutments in position the studs projecting from the beveled faces of the abutments extend inwardly in parallel position to form guides for the wedges, the latter fitting be tween the studs, and thereby preventing creeping of the. demountable rim on the .telly Thus with the parts in position as shown in Fig. 1, the screwing of the nuts upon the bolts e will, by reason of the in` wardly tapered elongation of the nuts, force the wedge clamps inward. The inwardly extending upper portions of the wedges slid.-

ing inward as they do.against the inclined -faces of the abutments and between the studs 12 will tighten the rim upon the felly, and the studs l2 bearing against the sides of the wedges assist in holding the demountable rim in alinement upon the felly. The seating of the conical projections 6 of the nuts 5 upon the rounded ends 10 of the-elongated openings 8 will also tend to force the clamping wedges 7 in a direction radially of the wheel, when the nuts-are tightened upon the bolts, and thereby obtain a maximum degree of binding action between the wedges and the abutments. When it is desired to remove the rim the nuts will off the wheel without removing the nuts or wedges.

I claim as my invention:

1. In a demountable rim structure for wheels, the combination with a Wheel felly, and ya demountable rim associated therewith, of a plurality of abutments arranged in spaced relation on said rim and interposed between the latter and said felly, each of said abutments comprising an elongated plate the opposite faces of which are provided with studs, the studs at the outer face of said plate being received by openings inthe demountable rim and suitably secured therein to hold the abutment on the rim, the studs at the inner face of the abutment projecting toward the wheel felly, the faces of the abutments next adjacent to the wheel fellybeing inclined, a clamping wedge associated .with each abutment and fitted between the inclined face of the latter and the wheel felly for coperation with said inclined face, said clamping wedges also litting between the studs at the inner faces of the abutments, and means for holding the clamping wedges in clamping relation to the rim.

2. In a demountable rim struct-ure for wheels, the combination with a wheel felly, a band thereon, and a demountable rim associated therewith and provided with a series of inclined faces next adjacent to the felly band, of a clamping wedge associated with each of said inclined faces and provided with an inwardly-extending foot ittedl between the inclined face and the felly band, said foot having-its outer face inclined to coperate with said inclined face of the rim, the body of each of said clam f ing wedges having an elongated opening t e end of which next to the foot of the Wedge is rounded in cross-section, a bolt arranged in the wheel felly for coperation with each of said clamping wedges, and a nut carried by each of said bolts, each of said nuts having a conical elongation fitted in the elongated opening of the adjacent clamping wedge, and seated against the rounded ,end

of said opening.

In testimony whereof I aiix my signature in presence of two witnesses.

ALBERT n. BEHNKE.v

Witnesses I H, SWANsoN,

H. S. JOHNSON. 

